Etheldreda

A mysterious girl who attends by the side of Black Lodge leader Master Therion as if she is his very shadow. The devotion she shows him is unwavering, an obedience that could be deemed fanatical. Unlike Al Azif she remains calm, quiet and composed in all circumstances.

With such a close relationship to her master, Etheldreda could only be the physical embodiment of the grimoire that allows Master Therion to power his own Deus Machina...

Spoiler

Like Master Therion, Etheldreda were also brought back by Another Blood as nightmare for her "story" in Kishin Hishou. The true Etheldreda has been erased from history after the events of Al Azif's route.